Variable concatenated string size?

[Tresdin]

Hello everyone,

I have the following question:

In Labview there is a function called concatenate strings. When I want to "add" three strings I can pull the concatenate string to size three for three inputs.

Is there a possibility to implement a numeric control where I can enter a number which varies my inputs for the concatenate string function?

If I want to add three strings I enter 3 into my numeric control and my function gets three inputs. After my program ran I want to have five strings added so I would enter 5. Is there a possibility to achieve this?

Thanks for your help in advance.

Best regards,

Tresdin

[crossrulz]

You might be able to acheive what you are looking for by using an array of strings and then use concatinate strings on the array (with a single input).

[Tresdin]

Thank your crossrulz, I will play a bit around and see if this solves my problem.

[Jacobson-ni]

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@crossrulz wrote:

You might be able to acheive what you are looking for by using an array of strings and then use concatinate strings on the array (with a single input).

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I had no idea that you could do this. Every time I have needed to do this I just put a ccat in a for loop and indexed the array. I feel a bit silly now.

[RavensFan]

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@Jacobson-ni wrote:

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@crossrulz wrote:

You might be able to acheive what you are looking for by using an array of strings and then use concatinate strings on the array (with a single input).

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I had no idea that you could do this. Every time I have needed to do this I just put a ccat in a for loop and indexed the array. I feel a bit silly now.

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Well Context Help does tell you that you can do it.  All you need to do is read it! 

[Tresdin]

Thanks everyone for their input.

I have a followup question concerning the same problem:

Overall I want to sent a string command to an external robot arm. I want to do the following: Before I start I want to enter all the coordinates the arm should drive to, something like:

Point 1: (x1,y1,z1)

Point 2: (x2,y2,z2)

..

etc. after I entered all my points I want to start the program. The points shall be entered in my 1D Array as crossrulz explained it to me.

How can I temporary save my input strings? I would have done this with shift registers usually I think, but as I have a varying number of points (for example sometimes I want to driver to 4 different points, sometimes I want to drive to 50 different points). So shift registers don't seem to be the solution here. My question: How can I temporary save my input strings and write them to a 1D array after I finished entering every string.

If the mods think this doesn't fit into this thread anymore. I would be grateful if you move this, but I thought it fits because it's still the same problem I'm working on.

Thanks everyone again!

[crossrulz · Accepted solution]

It sounds to me like your program should be in a FOR loop, autoindexing on the array of points.

[Tresdin]

Hi crossrulz,

thank you for your fast reply. This sounds a bit embarrassing but what are the points on the left side (I guess a cluster?). I would copy it to my blockdiagram but unfortunately I'm using Labview 2012.

[crossrulz]

Points is an array of clusters.  Each element in the array is a cluster with X, Y, and Z numerics.